Heel-seat attachment for stapling machines



April 8 1924. v

' A. H. PRENZEL HEEL SEAT ATTACHMENT FOR STAPLING MAQHINES Filed Aug. 21. 1922 2 Sheets-Sheet 1 [MENTOR A.f/:Pren/zeZ-.

' ATTORNEYS April 8 1924.

A. H. PRENZEL HEEL SEAT ATTACHMENT FOR STAPLING MACHINES 2 sheds-sneak 2 .5 m w m M H a 0 H 8 WW Patented Apr. 8, 192%.

B AT Nil ADAM HENRY PRENZEL, OF HALIFAX, PENNSYLVANIA.

HEEL-SEAT ATTACHMENT FOR STAELING-"MACHINES.

Application filed. August 21, 1922. SerialNo. 583,323.

To all whom it may concern:

Be it known that I, ADAM H. PRENZEL, a citizen of the United States, and a resident of Halifax, in the county of Dauphin and State of Pennsylvania,have invented certain new and useful Improvements in Heel- Seat Attachments for Stapling' Machines, of which the following is a specification.

My invention relates to improvements in stapling machines and it consists of the constructions, combinations and mode of operation herein described and claimed.

An object of the invention is to provide attachments to a stapling machine, the use of which. enables the driving of staples around the heel seat of a shoe so as to secure the upper leather and lining to the sole. 7

Another object of the invention is to provide an attachment for a stapling machine in substitution of the usual stapling supporter and another attachment by means of which a partially made shoe on a last can be tightly wedged under the substituted stapling support preparatory to driving a staple through the upper leather and lining into the sole around the heel seat.

Other objects and advantages will appear in the following specification, reference being had to the accompanying drawings, in whichf Fig. 1 is a perspective view of a portion of a stapling machine illustrating the stae pling support and wedging attachments in place,

Fig. 2 is a detail perspective view of a portion of the. stapling machine frame, showing the dovetail grooves by which the wedging attachment is fitted in place, and

Fig. 3 is a detail side elevation, parts being shown in section. of a portion of the stapling machine in Fig. 1 and showing the shoe wedged in place under the stapling support preparatory to driving a staple.

The invention comprises the stapling support 1 and the wedging attachment 2. These attachments are fitted in place on the stapling machine which, briefly described, comprises the standard 3,'table 4, frame 5 and rocker 6.

The rocker 6 has a driving head 7 in which a staple driver 8 is reciprocated at such times when actuated. bythe driving arm 9. Such actuation occurs when the operator steps on the treadle 10 (Fig. 3) and by means of the connecting rod 11 pulls down the rocker 6 through. the medium of is still on the last, is usually the rocker arm 12 which has connection with the member 11. This act of stepping on the f treadle 10 sets certain mechanism in motion which causes a depression of the driving arm 9 and the consequent driving of a staple out of the staple guide '13. g

The attachments 1 and 2 are designed to enable fastening down the lining and upper leather of a shoe 14 around the heel seat 15 by means ofstaples, and in this respect the attachments are auxiliaries to my improved stapling machine for which application for Letters Patent was filed on August 21, 1922, Serial No. 583,322. The work of fastening down the upper leather and lining around the heel seat while the partially made shoe done by means of tacks which are driven in by hand. The ordinary stapling machine is not adapted for the purpose of doing the same work by means of staples because there is-nothing to hold the last, and consequently, tightly in position, nor is the ordinary stapling support adapted to driving staples therethrough into the heel seat. In order to carry out the purposeof the invention it is necessary to. provide both the particular support 1 illustrated and also the working attachment 2 which works in conjunction with the stapling support. The stapling support is nothing more than a bracket which has a right angled portion 16 through which the shank of the bolt 17 passes to secure the support to the frame 5 of the machine. The heel 18 of the support has an oval opening 19 which permits the staple guide 13 to pass through into contact with the leather of the shoe when the shoe is pressed. up under the heel 18 as in Fig. 3. An adjustable stop 20 is used to limit the downward movement of the rocker 6, and consequently the downward movement of the staple guide 13. r

Mounted at the front of the table 4 is the the shoe,

base 21 of the wedging attachment 2, which ment of the quadrant 27 of the handle28.

This handle is pivoted at 29 to a plug 80 which is capable of sliding vertically in the casing when the auxiliary treadle 31 isde pressed. This treadle has connection by means of a chain 32 with a lever 38, pivoted at 34 between lugs 35 projecting from the base 21, the rounded. end 36 of the lever being in Contact with the bottom of the plug so that the latter may be moved up when the treadle is depressed, as stated.

The spring 37 functions to keep the plug 30 in contact with the rounded end 36 of the lever and also keeps the plug and its carried parts in the depressed position in respect to the heel 18 of the stapling support. The pin 38 to which one end of the spring is attached is secured to the quadrant 27 and projects out of the rear slot 26. Both the quadrant and the pin, by virtue of occupying the slots, keep the plug 30 from turning in the casing 24.

A stem 39 projecting from the quadrant 27 is adapted to carry the last 40 1 upon which the partially made shoe 1d is mounted. The last is fitted upon the stem 39 only for the purpose of supporting it until the upper leather and lining are secured down around the heel seat.

The operation being as follows: Normally, he handle 28 is down, about as shown in Fig. 1, the last and shoe being inclined forwardly and also being free of the support 1 to enable whatever adjustment might be required. Having placed the last in its proper position upon the stem 39, the operator next steps upon the treadle 31, thereby causing the heel of the shoe to be driven up under the heel 18 of the support 1 by virtue of raising the plug 30 through the chain 32 and lever 33.

The operator next grasps the handle 28 and pulls it upwardly toward'him in the direction of the arrow in Fig. 3, so that the shoe iswedged under the heel 18 in perfectly tight engagement with the support. As shown in Fig. 3, the under side of the heel is slightly rounded to more readily conform to the usual camber of the heel seat, pecially where the upper and lining are lapped over upon the sole. 7

Having the shoe in firm position beneath the heel 18 the operator next steps upon the treadle 10 which depresses the rocker 6 so'that the staple guide 13 enters the oval opening 19 and comes into engagement with the leather of the shoe upper. The act of stepping on the treadle 10 also sets the stapling mechanism in motion so that a staple is driven directly through the upper leather, lining and sole of the shoe into the last. The necessary turning of the last in order to bring all parts of the heel seat into position beneath the heel 18, is accomplished by merely turning the last upon the stem 39 which has a sufficiently loose connection therewith to accomplish the purpose.

While the construction and arrangement of the improved heel stapling attachment nesaecc as herein described and claimed, is that of a generally preferred form, obviously modifications and changes may be made without dermrtirg "from the spirit of the invention or the scope of the claims.

I claim 1. In combination with the stapling mechanism and table of a stapling machine, a support having an opening to admit the staple guide of said mechanism, means mounted upon the table constituting support and guide, a plug mounted in the support, means carried by the plug in turn adapted to carry a last with a partly completed shoe said carrying means enacting with the support to guide the plug. means whereby the carrying means may be moved in respect to the plug to wedge the shoe under the stapling support, and means by which the plug and its carried parts is first bodily elevated preparatory to said wcdging action.

2. in combination with the stapling mechanism and table of a stapling machine, a support having an opening to admit the staple guide of said mechanis,.., means on the table constituting a support and guide, a plug mounted said support, means carried by the plug having a portion thereof in engagement with the support to act as the guide for the plug also having means adapted to carry a last with a partly completed shoe, means contacting the plug and adapted to slide it in the support to move the shoe toward the stapling support, and means em bodied in said carryingmeans for moving the last inwardly oi" the support to exert a wedging action.

In combination with the stapling mechanism and table of a stapling machine, a support he. ng an opening to admit the staple guide of said mechanism, a base mounted on the table having means constituting a support and guide, a plug mounted in the support, handle moui co in the plug having extending portions to engage parts of the support thus guide the plug, said handle also having means to carry a last with a partly completed shoe thereon and means mounted on the base in contact with the plug and adapted to move the plug and last upwardly under the stapling support preparatory to a wedging action thereunder which is accomplished by said handle.

1. In combination with the stapling mechanism and table of a stapling machine, a stapling support having an opening to admit the staple guide of said mechanism. a basemounted on the table and having a t Ilflllttl slotted casing, a plug mounted in the casing, a quadrant pivotally mounted in the plug and having portions engaging the slots to keep the plug from turning, means carried by the quadrant adapted to support a last with a partly completed shoe thereon,

means mounted on the base and adapted to be moved to shift the plug in the casing and elevate the last and shoe in respect to the stapling support, and a handle extending from the quadrant whereby the latter may be moved on its pivot to wedge the shoe under the stapling support preparatory to driving a staple.

5. In combination with the stapling mechanism and table of a stapling machine, a stapling support having an opening to ad mit the staple guide of said mechanism, a base afiixed to the machine frame in contact with the table and having a slotted casing, a plug mounted in the casing, a quadrant pivotally mounted on the plug and having means adapted to carry a last with a partly completed shoe, portions of the quadrant occupying the slots to prevent the plug from turning, a lever pivoted in one of the slots and contacting the plug, means to move the lever and shift the plug in the casing to elevate the shoe under the stapling support, and a handle forming part of the quadrant enabling rocking thereof on the pivotal mounting to move the shoe toward the stapling sup port and wedge it in place preparatory to driving a staple.

6. In a stapling machine, a stapling support removably mounted on the frame and having an opening to admit the staple guide of the stapling mechanism, a base removably mounted upon the frame and having a casing with slotted sides, a plug fitted in the easing, a quadrant pivotally mounted in the plug and occupying portions of the slots to prevent the plug from turning, a stem carried by the quadrant and adapted to in turn carry a last with a partly completed shoe, a handle included in the quadrant adapted to swing it on its pivot to wedge the shoe under the stapling'support preparatory to driving a staple, a lever pivoted on the base in one of the slots and having contact with the plug,

a treadle having a connection to the lever and adapted to elevate the plug and shoe preparatory to the wedging act by said handle, and a spring connected between the quadrant and the base to keep the plug in contact with said lever.

7. In combination with the frame of a machine of the class described, a stapling support removably attachable to a part of the frame and having an opening to admit the staple guide of said machine, a wedging attachment having means by which it is slidably engaged with a portion of the frame to permit subsequent detachment thereof, pedal-operated means carried by said attachment adapted to reciprocate thereon, and work-carrying means supported by said reciprocal means adapted to be manually operated to produce a wedging action beneath said stapling support.

8. In combination with the frame of a machine of the class described, a stapling support removably attached to a part of the frame and having an opening to admit the staple guide of said machine, a wedging attachment removably applied to another por tion of the frame, means including a plug carried by said attachment, pedal operated m ans for reciprocating said plug, work-car rying means, means by which said workcarrying means is pivotally mounted on the plug, and means by which said work-carrying means may be manually tilted on the pivot to cause the work to wedge beneath said staplin support.

9. In a machine of the class described, a base adapted to be carried by the frame of such machine, a plug movably mounted on the base, a work holder carried by the plug, means carried by the base adapted to move said plug and work-carrying means in respect to the base, and means tending to oppose the action of said moving means but at the same time keeping the plug in contact with said moving means.

10. In combination with the frame and stapling supportof a machine of'the class described, a wedging attachment comprising a base applied to the frame, a plug movably carried by the base, work-carrying means pivotally mounted on the plug, means mounted on the base adapted to move the plug rec tilinearly toward said stapling support, and means having connection between said workcarrying means and the base adapted to both keep the plug in contact with said moving means and tend to rock the work-carrying means in a curvilinear direction toward the stapling support.

11. In combination with the stapling support and frame of a machine of the class described, a base attached to the frame, a slotted casing forming part of the base, a plug occupying the casing, work-holding means pivotally mounted on the plug including portions engaging the slot to serve as a guide for the plug, pivoted means carried by the base including an end extending into the casing to support the plug said pivoted means being adapted to'move the plug rectilinearly in the casing to advance the work holding means toward the stapling support, and a spring fastened between a portion of the work-holding means and the base being adapted to both keep the plug in contact with said end and tend to rock the work-holding means toward the stapling support in a curvilinear direction.

ADAM HENRY PRENZEL. 

